ci: migrate project automation to Just (#442)

* ci: migrate project automation to Just

Centralize build, test, release, dependency, hook, and website commands in Just recipes. Pin workflow tooling, use the repository toolchain, and run the complete validation set in CI.

* ci: codex being codex

* docs: update CLAUDE.md for just task runner migration

Reflect the switch to just recipes for build/test/clippy/fmt, note
dprint replacing raw rustfmt, and add a cross-platform code requirement.

* fix: resolve clippy warnings breaking CI on ubuntu and windows

Use clone() instead of implicit to_string() on already-owned String
values, gate the windows-only unused make_file_at import behind
cfg(posix), and fix unused mut / manual assign-op in the windows-only
localhost test.

* fix: fmt

src/system/auto_update.rs

@@ -68,7 +68,8 @@ impl Update {
     }
 
     /// Returns whether a new version of termscp is available
-    /// In case of success returns Ok(Option<Release>), where the Option is Some(new_version);
+    /// In case of success returns `Ok(Option<Release>)`, where the option is
+    /// `Some(new_version)`;
     /// otherwise if no version is available, return None
     /// In case of error returns Error with the error description
     pub fn is_new_version_available() -> Result<Option<Release>, UpdateError> {

src/system/bookmarks_client.rs

@@ -767,7 +767,7 @@ mod tests {
         // Limit is 2
         assert_eq!(client.iter_recents().count(), 2);
         // Check that 192.168.1.1 has been removed
-        let key: String = client.iter_recents().next().unwrap().to_string();
+        let key: String = client.iter_recents().next().unwrap().clone();
         assert!(matches!(
             client
                 .hosts
@@ -781,7 +781,7 @@ mod tests {
                 .as_str(),
             "192.168.1.2" | "192.168.1.3"
         ));
-        let key: String = client.iter_recents().nth(1).unwrap().to_string();
+        let key: String = client.iter_recents().nth(1).unwrap().clone();
         assert!(matches!(
             client
                 .hosts
@@ -938,7 +938,7 @@ mod tests {
         let protocol = params.protocol;
         let p = params.params.generic_params().unwrap();
         (
-            p.address.to_string(),
+            p.address.clone(),
             p.port,
             protocol,
             p.username.as_ref().cloned().unwrap_or_default(),

src/system/config_client.rs

@@ -595,7 +595,7 @@ mod tests {
         client.set_local_file_fmt(String::from("{NAME}"));
         assert_eq!(client.get_local_file_fmt().unwrap(), String::from("{NAME}"));
         // Delete
-        client.set_local_file_fmt(String::from(""));
+        client.set_local_file_fmt(String::new());
         assert_eq!(client.get_local_file_fmt(), None);
     }
 
@@ -613,7 +613,7 @@ mod tests {
             String::from("{NAME}")
         );
         // Delete
-        client.set_remote_file_fmt(String::from(""));
+        client.set_remote_file_fmt(String::new());
         assert_eq!(client.get_remote_file_fmt(), None);
     }
 

src/system/environment.rs

@@ -207,6 +207,7 @@ mod tests {
         let mut f: File = OpenOptions::new()
             .create(true)
             .write(true)
+            .truncate(true)
             .open(conf_dir.as_path())
             .ok()
             .unwrap();

src/system/watcher.rs

@@ -294,7 +294,7 @@ mod test {
         );
         // unwatch
         assert!(watcher.unwatch(tempdir.path()).is_ok());
-        assert!(watcher.paths.get(tempdir.path()).is_none());
+        assert!(!watcher.paths.contains_key(tempdir.path()));
         // close tempdir
         assert!(tempdir.close().is_ok());
     }
@@ -315,7 +315,7 @@ mod test {
             watcher.unwatch(subdir.as_path()).unwrap().as_path(),
             Path::new(tempdir.path())
         );
-        assert!(watcher.paths.get(tempdir.path()).is_none());
+        assert!(!watcher.paths.contains_key(tempdir.path()));
         // close tempdir
         assert!(tempdir.close().is_ok());
     }